steve traylen particle physics department edg and lcg status [email protected] 9 th december 2003...

Steve Traylen

Particle Physics Department

EDG and LCG [email protected] December 2003

Steve Traylen


Contents• Status of EDG 2.1.

• Site status for EDG.

• Joining EDG.

• Site status for LCG 1.1.

• Software in LCG 1.1.

• Joining LCG.

• LCG Monitoring.

Steve Traylen


Status of EDG 2.1• EDG 2.0.15 was released Oct 7th.• EDG 2.1.5 was released Nov 24th

• EDG 2.1.6 was released Dec 4th

– Security updates only, kernel, XFree86, glibc.• Critical fixes only to be added to 2.1 release. i.e.

only if something is visibly broken.• Releases now reduced to 3 or 4 weeks but

erratic.• Dev test bed still progressing slowly, it may be

used for the EU review in early February.

Steve Traylen


New software in EDG2.0/1

• VOMS servers exist for wpsix and iteam VOs, up again despite the flood at Marseille.

• VOMS information used by job submission and replica manager to determine VO.

• LCAS on the gatekeeper uses VOMS information.

• It is your VO membership that counts to access resources, not the grid-mapfile.

• Mass storage use is transparent to ADS (almost).

Steve Traylen


R-GMA in EDG 2.1

• R-GMA is working well:– Prior to this a registry dead lock existed that

crippled EDG2.0.• Service location via R-GMA, e.g. the RCs.• Also DZero is in particular are using

R-GMA to record job status and stats.• MDS is now redundant.• WP3 test bed including RAL and Bristol to be

valuable for this.

Steve Traylen


Site Status for EDG• RAL-GRIDPP: 8 cpus and hosts the R-GMA

information catalogue.• RAL-PPD: 12 cpus.• NIKHEF: 12 cpus and hosts a Resource Broker.• Imperial: 2 cpus and hosts a Resource Broker.• FZK: 2 cpus. Paldova 6 cpus.• IN2P3: 4 cpus and iteam/wpsix VOMS.• Cambridge and Oxford in final stages.• http://gppic05.gridpp.rl.ac.uk:8080/R-GMA/

Steve Traylen


Joining EDG• New sites are very welcome.

• Scalability of R-GMA is the motivation for this and so small is very welcome.

• Instructions from GridPP have both been updated for EDG 2.1.– http://www.gridpp.ac.uk/tb-support/tb-install– http://www.gridpp.ac.uk/tb-support/ui.html– Email: [email protected]

Steve Traylen


Joining EDG• Nodes required, CE, SE, MON, WN and

LCFGng.• There have been very few successful

installs with out LCFGng.– Odd boxes by existing site admins and

developers. – Documentation does exist for this though.

• Final testing, debugging and inclusion done by me.

Steve Traylen


LCG Status• Current version is 1-1.1.3.• Releases are only once every 2 months or more

except for security updates.• Upgrades have been smooth, e.g. Cavendish

and Imperial upgraded silently in a day or two.• Default VOs are Alice, Atlas, LHCb, CMS and

DTeam.– Adding extra VOs is fine, e.g. RAL has

support for BaBar and DZero.

Steve Traylen


Software in LCG today.• Job submission identical to EDG.• LCG-PBS job manager in use.

– No shared /home with WNs.– One jobmanager per user, not one per job.

• The EDG replica manager is in use but SE are only GridFTP servers.

• No support for mass storage ! !• No R-GMA, MDS and BDII in use.

Steve Traylen


LCG 2.0

• LCG 2 is expected this year.

– VOMS, LCAS, GFAL.

• Hard to find what is actually in LCG2 but no R-GMA or mass storage support except maybe castor and HPSS via the GFAL.

Steve Traylen


LCG Site Status• Site status is very impressive. 28 sites.• Barcelona, Valencia, Madrid x 2, Santiago,

Santander, BNL, FNAL, Budapest, CERN, CSCS, CNAF, Torino, Malano, Roma, Legarno, FZK, Krakow, Lyon, Moscow, NIKHEF, Prauge, RAL, Imperial, Cavendish, Taipei and Tokyo.

• Usually at least one a week join. • Sofia and Pakistan joining soon.

Steve Traylen


LCG Site Status

Steve Traylen


BDII and Information System in LCG

RBBDII

LDAP

queryquery

fall back

primary

lcgeast1

GIIS

lcgeast2

GIIS

CE1

GRIS

SE1

GRIS

MOSCOW

GIIS

CE1

GRIS

SE1

GRIS

TOKYO

GIIS

CE1

GRIS

SE1

GRIS

CERN

GIIS

lcgsouth1

GIIS

lcgsouth2

GIIS

lcgwest1

GIIS

CE1

GRIS

SE1

GRIS

FNAL

GIIS

CE1

GRIS

SE1

GRIS

BNL

GIIS

CE1

GRIS

SE1

GRIS

RAL

GIIS

CE1

GRIS

SE1

GRIS

CNAF

GIIS

CE1

GRIS

SE1

GRIS

PICBARCELONA

GIIS

CE1

GRIS

SE1

GRIS

UAMMADRID

GIIS

Site GIISSite GIIS

Regional GIISesRegional GIISes

register and publishregister and publish

Steve Traylen


Joining LCG (Very formal)• RAL as the tier1 centre in the UK is the main

contact.

• The procedure:

– Tier2 contacts tier1.

– Tier2 fills in a questionnaire for the tier1 and tier0.

– Tier 0 creates a CVS directory for tier2.

– Tier 2 installs LCG with support from tier1.

– Finally tier2 is verified by tier1.

Steve Traylen


LCG Site Configs in CVS.

• Central CVS at CERN• Allows you to

compare and steal other site’s configs.

• Also allows other people to check easily.

Steve Traylen


How to join LCG

• A document exists explaining this: how2start.txt

• http://grid-deployment.web.cern.ch/grid-deployment/cgi-bin/index.cgi?var=gis/how2Start

• Questionnaire includes hostnames, site contact addresses, VOs you plan to support, number of CPUs, ….

• Nodes required, CE, SE, WN, LCFGng.

• non LCFGng UI and WN is supported.

Steve Traylen


EDG or LCG• The test beds, EDG2 and LCG0 never

converged as they were meant to. The big gap here in software was R-GMA.

• Experiments are favouring LCG due to stability and its long term future.

• EDG is now over a bad 2 months though with DZero and CMS returning.

• LCG software is possibly easier to install and maintain than EDG but only relatively.

• What happens to EDG next year past February is not clear at this moment….

Steve Traylen


The End

steve traylen particle physics department edg and lcg status [email protected] 9 th december 2003...

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